diff options
Diffstat (limited to 'src/H5Z.c')
| -rw-r--r-- | src/H5Z.c | 163 |
1 files changed, 155 insertions, 8 deletions
@@ -22,6 +22,7 @@ #include "H5private.h" /* Generic Functions */ #include "H5Dprivate.h" /* Dataset functions */ #include "H5Eprivate.h" /* Error handling */ +#include "H5Fprivate.h" /* File */ #include "H5Iprivate.h" /* IDs */ #include "H5MMprivate.h" /* Memory management */ #include "H5Oprivate.h" /* Object headers */ @@ -51,6 +52,9 @@ typedef enum { H5Z_PRELUDE_SET_LOCAL /* Call "set local" callback */ } H5Z_prelude_type_t; +/* Maximal number of the list of opened objects (2^16) */ +#define NUM_OBJS 65536 + /* Local variables */ static size_t H5Z_table_alloc_g = 0; static size_t H5Z_table_used_g = 0; @@ -403,33 +407,133 @@ done: *------------------------------------------------------------------------- */ herr_t -H5Z_unregister (H5Z_filter_t id) +H5Z_unregister (H5Z_filter_t filter_id) { - size_t i; /* Local index variable */ + hid_t *file_list = NULL; + hid_t *obj_id_list = NULL; + size_t num_obj_id = 0; + size_t num_file_id = 0; + H5F_t *f = NULL; /* File to query */ + H5I_type_t id_type; + hid_t ocpl_id; + H5P_genplist_t *plist; /* Property list */ + size_t filter_index; /* Local index variable for filter */ + int i; + htri_t filter_in_pline = FALSE; herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(FAIL) - assert (id>=0 && id<=H5Z_FILTER_MAX); + assert (filter_id>=0 && filter_id<=H5Z_FILTER_MAX); /* Is the filter already registered? */ - for (i=0; i<H5Z_table_used_g; i++) - if (H5Z_table_g[i].id==id) + for (filter_index=0; filter_index<H5Z_table_used_g; filter_index++) + if (H5Z_table_g[filter_index].id==filter_id) break; /* Fail if filter not found */ - if (i>=H5Z_table_used_g) + if (filter_index>=H5Z_table_used_g) HGOTO_ERROR(H5E_PLINE, H5E_NOTFOUND, FAIL, "filter is not registered") + /* Count the number of opened datasets and groups among all opened files */ + if(H5F_get_obj_count(NULL, H5F_OBJ_DATASET | H5F_OBJ_GROUP, FALSE, &num_obj_id) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't get object number") + + if(num_obj_id) { + if(NULL == (obj_id_list = (hid_t *)H5MM_malloc(num_obj_id*sizeof(hid_t)))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "failed to allocate space") + + /* Find all opened objects that may use the filter (datasets and groups). Passing NULL as a pointer to + * file structure indicates searching among all opened files */ + if(H5F_get_obj_ids(NULL, H5F_OBJ_DATASET | H5F_OBJ_GROUP, num_obj_id, obj_id_list, FALSE, &num_obj_id) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't get object IDs") + } + + /* Check if any opened object (dataset or group) uses the filter. If so, fail with a message */ + for(i=0; i<num_obj_id; i++) { + if((id_type = H5I_get_type(obj_id_list[i])) < 0) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "bad object id"); + + switch(id_type) { + case H5I_GROUP: + { + H5G_t *group = NULL; + + if(NULL == (group = (H5G_t *)H5I_object_verify(obj_id_list[i], H5I_GROUP))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a group") + + if((ocpl_id = H5G_get_create_plist(group)) < 0) + HGOTO_ERROR(H5E_ARGS, H5E_CANTGET, FAIL, "can't get group creation property list") + + } + break; + + case H5I_DATASET: + { + H5D_t *dataset = NULL; + + if(NULL == (dataset = (H5D_t *)H5I_object_verify(obj_id_list[i], H5I_DATASET))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset") + + if((ocpl_id = H5D_get_create_plist(dataset)) < 0) + HGOTO_ERROR(H5E_ARGS, H5E_CANTGET, FAIL, "can't get dataset creation property list") + } + break; + + default: + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "not a valid object") + } /* end switch */ + + /* Get the plist structure of object creation */ + if(NULL == (plist = H5P_object_verify(ocpl_id, H5P_OBJECT_CREATE))) + HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID") + + /* Check if the object creation property list uses the filter */ + if((filter_in_pline = H5P_filter_in_pline(plist, filter_id)) < 0) + HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't check filter in pipeline") + + if(filter_in_pline) + HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't unregister filter because some object is still using it") + } + + /* Count the number of opened files */ + if(H5F_get_obj_count(NULL, H5F_OBJ_FILE, FALSE, &num_file_id) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't get file number") + + /* Get the list of IDs for all opened files */ + if(num_file_id) { + if(NULL == (file_list = (hid_t *)H5MM_malloc(num_file_id*sizeof(hid_t)))) + HGOTO_ERROR(H5E_RESOURCE, H5E_CANTALLOC, FAIL, "failed to allocate space") + + if(H5F_get_obj_ids(NULL, H5F_OBJ_FILE, num_file_id, file_list, FALSE, &num_file_id) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTGET, FAIL, "can't get file IDs") + } + + /* Flush all opened files in case any file uses the filter */ + for(i=0; i<num_file_id; i++) { + if(NULL == (f = (H5F_t *)H5I_object_verify(file_list[i], H5I_FILE))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file") + + /* Call the flush routine for mounted file hierarchies. Do a global flush + * if the file is opened for write */ + if(H5F_ACC_RDWR & H5F_INTENT(f)) { + if(H5F_flush_mounts(f, H5AC_dxpl_id) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTFLUSH, FAIL, "unable to flush file hierarchy") + } /* end if */ + } + /* Remove filter from table */ /* Don't worry about shrinking table size (for now) */ - HDmemmove(&H5Z_table_g[i],&H5Z_table_g[i+1],sizeof(H5Z_class2_t)*((H5Z_table_used_g-1)-i)); + HDmemmove(&H5Z_table_g[filter_index],&H5Z_table_g[filter_index+1],sizeof(H5Z_class2_t)*((H5Z_table_used_g-1)-filter_index)); #ifdef H5Z_DEBUG - HDmemmove(&H5Z_stat_table_g[i],&H5Z_stat_table_g[i+1],sizeof(H5Z_stats_t)*((H5Z_table_used_g-1)-i)); + HDmemmove(&H5Z_stat_table_g[filter_index],&H5Z_stat_table_g[filter_index+1],sizeof(H5Z_stats_t)*((H5Z_table_used_g-1)-filter_index)); #endif /* H5Z_DEBUG */ H5Z_table_used_g--; done: + if(file_list) H5MM_free(file_list); + if(obj_id_list) H5MM_free(obj_id_list); + FUNC_LEAVE_NOAPI(ret_value) } /* end H5Z_unregister() */ @@ -1275,6 +1379,49 @@ done: /*------------------------------------------------------------------------- + * Function: H5Z_filter_in_pline + * + * Purpose: Check wheter a filter is in the filter pipeline using the + * filter ID. This function is very similar to H5Z_filter_info + * + * Return: TRUE - found filter + * FALSE - not found + * FAIL - error + * + * Programmer: Raymond Lu + * 26 April 2013 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +htri_t +H5Z_filter_in_pline(const H5O_pline_t *pline, H5Z_filter_t filter) +{ + size_t idx; /* Index of filter in pipeline */ + htri_t ret_value = TRUE; /* Return value */ + + FUNC_ENTER_NOAPI(FAIL) + + assert(pline); + assert(filter>=0 && filter<=H5Z_FILTER_MAX); + + /* Locate the filter in the pipeline */ + for(idx=0; idx<pline->nused; idx++) + if(pline->filter[idx].id==filter) + break; + + /* Check if the filter was not already in the pipeline */ + if(idx>=pline->nused) + ret_value = FALSE; + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5Z_filter_in_pline() */ + + + +/*------------------------------------------------------------------------- * Function: H5Z_all_filters_avail * * Purpose: Verify that all the filters in a pipeline are currently |